/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#ifndef __FREESTYLE_CULLED_OCCLUDER_SOURCE_H__
#define __FREESTYLE_CULLED_OCCLUDER_SOURCE_H__

/** \file
 * \ingroup freestyle
 * \brief Class to define a cell grid surrounding the projected image of a scene
 */

#include "OccluderSource.h"
#include "ViewMap.h"

namespace Freestyle {

class CulledOccluderSource : public OccluderSource {
  // Disallow copying and assignment
  CulledOccluderSource(const CulledOccluderSource &other);
  CulledOccluderSource &operator=(const CulledOccluderSource &other);

 public:
  CulledOccluderSource(const GridHelpers::Transform &transform,
                       WingedEdge &we,
                       ViewMap &viewMap,
                       bool extensiveFEdgeSearch = true);
  virtual ~CulledOccluderSource();

  void cullViewEdges(ViewMap &viewMap, bool extensiveFEdgeSearch);

  bool next();

  void getOccluderProscenium(real proscenium[4]);

 private:
  bool testCurrent();
  void expandGridSpaceOccluderProscenium(FEdge *fe);

  real occluderProscenium[4];
  real gridSpaceOccluderProscenium[4];

  unsigned long rejected;
  bool gridSpaceOccluderProsceniumInitialized;
};

} /* namespace Freestyle */

#endif  // __FREESTYLE_CULLED_OCCLUDER_SOURCE_H__
